Smoothness and trueness of putting greens before and after play

During the 2023 KBC Augusta golf tournament at Keya GC in Japan, I measured the bobble test each morning at the same time I measured the green speed before play. I then repeated this measurement at the end of each day's play. The results are shown in this chart, which goes from the Saturday afternoon (August 19) prior to the tournament all the way through to Sunday afternoon at the end of the tournament (August 27).

A score of 10…